neorv32_trng.h File Reference

True Random Number Generator (TRNG) HW driver header file. More...

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Functions
int	neorv32_trng_available (void)
void	neorv32_trng_enable (void)
void	neorv32_trng_disable (void)
void	neorv32_trng_fifo_clear (void)
int	neorv32_trng_get (uint8_t *data)
int	neorv32_trng_check_sim_mode (void)

Detailed Description

True Random Number Generator (TRNG) HW driver header file.

Note

These functions should only be used if the TRNG unit was synthesized (IO_TRNG_EN = true).

Function Documentation

neorv32_trng_available()

int neorv32_trng_available

(

void

)

Check if TRNG unit was synthesized.

Returns

0 if TRNG was not synthesized, 1 if TRNG is available.

neorv32_trng_check_sim_mode()

int neorv32_trng_check_sim_mode

(

void

)

Check if TRNG is implemented using SIMULATION mode.

Warning

In simulation mode the physical entropy source is replaced by a PRNG (LFSR) with very bad random quality.

Returns

Simulation mode active when not zero.

neorv32_trng_disable()

void neorv32_trng_disable

(

void

)

Disable true random number generator.

neorv32_trng_enable()

void neorv32_trng_enable

(

void

)

Enable true random number generator. The TRNG control register bits are listed in NEORV32_TRNG_CTRL_enum.

neorv32_trng_fifo_clear()

void neorv32_trng_fifo_clear

(

void

)

Clear TRNG random data "pool" (data FIFO).

neorv32_trng_get()

int neorv32_trng_get

(

uint8_t *

data

)

Get random data byte from TRNG.

Parameters

[in,out]

data

uint8_t pointer for storing random data byte.

Returns

Data is valid when 0 and invalid otherwise.